// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTERNAL_FILE_REF_BACKEND_H_
#define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTERNAL_FILE_REF_BACKEND_H_

#include <stdint.h>

#include <string>

#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/task_runner.h"
#include "content/browser/renderer_host/pepper/pepper_file_ref_host.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_time.h"
#include "ppapi/host/ppapi_host.h"

namespace content {

// Implementations of FileRef operations for external filesystems.
class PepperExternalFileRefBackend : public PepperFileRefBackend {
public:
    PepperExternalFileRefBackend(ppapi::host::PpapiHost* host,
        int render_process_id,
        const base::FilePath& path);
    ~PepperExternalFileRefBackend() override;

    // PepperFileRefBackend overrides.
    int32_t MakeDirectory(ppapi::host::ReplyMessageContext context,
        int32_t make_directory_flags) override;
    int32_t Touch(ppapi::host::ReplyMessageContext context,
        PP_Time last_accessed_time,
        PP_Time last_modified_time) override;
    int32_t Delete(ppapi::host::ReplyMessageContext context) override;
    int32_t Rename(ppapi::host::ReplyMessageContext context,
        PepperFileRefHost* new_file_ref) override;
    int32_t Query(ppapi::host::ReplyMessageContext context) override;
    int32_t ReadDirectoryEntries(
        ppapi::host::ReplyMessageContext context) override;
    int32_t GetAbsolutePath(ppapi::host::ReplyMessageContext context) override;
    storage::FileSystemURL GetFileSystemURL() const override;
    base::FilePath GetExternalFilePath() const override;

    int32_t CanRead() const override;
    int32_t CanWrite() const override;
    int32_t CanCreate() const override;
    int32_t CanReadWrite() const override;

private:
    // Generic reply callback.
    void DidFinish(ppapi::host::ReplyMessageContext reply_context,
        const IPC::Message& msg,
        base::File::Error error);

    // Operation specific callbacks.
    void GetMetadataComplete(ppapi::host::ReplyMessageContext reply_context,
        base::File::Error error,
        const base::File::Info& file_info);

    ppapi::host::PpapiHost* host_;
    base::FilePath path_;
    int render_process_id_;

    scoped_refptr<base::TaskRunner> task_runner_;

    base::WeakPtrFactory<PepperExternalFileRefBackend> weak_factory_;

    DISALLOW_COPY_AND_ASSIGN(PepperExternalFileRefBackend);
};

} // namespace content

#endif // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTERNAL_FILE_REF_BACKEND_H_
